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Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2017 | Jan. 01, 2017 | Jan. 03, 2016
Defined Contribution Pension And Other Postretirement Plans Disclosure [Abstract] |  |  |
Employer matching and profit-sharing contributions | $ 1.8 | $ 1.8 | $ 2.0

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- References No definition available. + Details
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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
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